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This Actisense NMEA Multiplexer / Combiner allows connection of up to five NMEA (National Marine Electronics Association) inputs, and multiplexes / combines them to its two NMEA outputs.
This approach offers these major advantages:
- Enables the vessel owner complete access to all NMEA data sources, instead of the standard one device
- Each NMEA input device is Opto-isolated from all other NMEA device in the system
- Significant reductions in installation cost (from reduced cable lengths and requiring only one NMEA cable to be routed around the bridge to supply the multiplexed NMEA data
The NDC-4 has two ISO-Drive outputs which are fully compatible with both NMEA 0183 and PC RS232 ports.
The NDC-4-USB has an additional USB bi-directional port which allows a copy of the data on the second ISO-Drive output to be sent to a virtual serial port on a PC, while receiving data from the PC through the same virtual port. This option disables the opto input reserved for the PC connection.
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This version of the NDC is no longer in production, please view the NDC-4 product if you require a new Multiplexer.
The Actisense™ NMEA Multiplexer / Combiner allows connection of up to four NMEA (National Marine Electronics Association) inputs to be multiplexed / combined in to one NMEA output.
This approach offers these major advantages:
Enables the vessel owner complete access to all NMEA data sources, instead of the standard one device
Each NMEA input device is Opto-isolated from all other NMEA device in the system
Significant reductions in installation cost (from reduced cable lengths and requiring only one NMEA cable to be routed around the bridge to supply the multiplexed NMEA data
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The Actisense%u2122 NMEA Multiplexer / Combiner allows connection of up to four NMEA (National Marine Electronics Association) inputs to be multiplexed / combined in to one NMEA output.
This approach offers these major advantages:
- Enables the vessel owner complete access to all NMEA data sources, instead of the standard one device
- Each NMEA input device is Opto-isolated from all other NMEA device in the system
- Any NMEA data not required can be easily filtered out to reduce the total amount of NMEA data in the system
- Each input and output Baud rate can be changed to match the requirements of connected devices
Electrical spike protection is provided as standard on all four input channels using opto-isolators. This protects any connected equipment from most system faults; a particularly valuable benefit as equipment requiring the most data, such as a PC or chart plotter, is often the most expensive to repair or replace.
The NDC-2 Data Multiplexer contains highly intelligent software that manages the multiplexing and filtering operation, allowing every input to have a chance of its data reaching the combined NMEA output. Tested up to and beyond a combined 300% loading of the four inputs.
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If the number of needed serial interfaces to control an ECDIS, a VDR or other systems on board of a vessel is not enough or the cabling between the systems contains not enough spare wires, the 4NMEA to1 module must be used. A data distribution between the connected sources is possible.
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